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답안 #1005252

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1005252 2024-06-22T09:21:05 Z modwwe Tourism (JOI23_tourism) C++17
28 / 100
 5000 ms 26640 KB 
///https://www.instagram.com/_modwwe/
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2")
#include<bits/stdc++.h>
//#define int long long
//#define ll long long
#define down cout<<'\n';
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".out","w",stdout)
#define pb push_back
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
void phongbeo();
const int mod2=1e9+7;
const int  mod1=998244353;
struct icd
{
    int a,b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a,b,c;
};
struct id
{
    int a,c;
};
struct ie
{
    int a,b,c, d,e,f;

};
int n,m,s1,s2,s4,s3,sf,k,r,mid,s5,s6,mx,s7,s8,s9,mx2,res,dem2=0,dem=0,l;
int  i,s10,s12;
int el=29;
main()
{
#ifndef ONLINE_JUDGE
  //  fin(task),fou(task);
#endif
    NHP
    /// cin>>s1;
    // modwwe
    phongbeo();
}
id t[400007];
int depth[100007];
ic a[100007];
int c[100007];
ib euler[100007];
int d[100007];
int st[17][100007];
int ans[1000007];
int S;
int b[100007];
vector<int> v[100007];
int e[100007];
int lz[400007];
int pre[100007];
int nxt[100007];
bool cmp(ic a,ic b)
{
    if(a.a / S != b.a / S) return (a.a < b.a);
	else if(!((a.a / S) & 1)) return (a.b < b.b);
	else return (a.b > b.b);
}
void upd(int node,int l,int r,int l1,int r1,int cc)
{
    if(l>=l1&&r<=r1)
    {
        t[node].c+=cc;
        s10=t[node].c;
        if(t[node].c>0) t[node]= {l,t[node].c};
        else t[node]= {0,0};
        return;
    }
    int mid=l+r>>1;
    if(mid>=r1)
    upd(node<<1,l,mid,l1,r1,cc);
    else
    upd(node<<1|1,mid+1,r,l1,r1,cc);
    t[node].a=max(t[node<<1].a,t[node<<1|1].a);
}
int get1(int node,int l,int r,int l1,int r1)
{
    if(l>r1||r<l1) return 0;
    if(l>=l1&&r<=r1) return t[node].a;

    int mid=l+r>>1;
    return max(get1(node<<1,l,mid,l1,r1),get1(node<<1|1,mid+1,r,l1,r1));
}
void dfs(int x,int y)
{
    st[0][x]=y;
    depth[x]=depth[y]+1;
    euler[x].a=++dem;
    c[dem]=x;
    for(auto f:v[x])
        if(f!=y)
            dfs(f,x);
    euler[x].b=dem;
}
int lca(int x,int y,int cc)
{
    if(x==0||x==n+1||y==0||y==n+1) return 1;
    if(depth[x]<depth[y]) swap(x,y),cc=0;
    int ss=depth[x]-depth[y]-1;
    if(ss>=0)
        for(int j=0; j<17; j++)
            if(bit(ss,j))
                x=st[j][x];
    if(st[0][x]==y) return x;
    if(ss!=-1)  x=st[0][x];
    for(int j=16; j>=0; --j)
        if(st[j][x]!=st[j][y])
            x=st[j][x],y=st[j][y];
    if(cc==0) return y;
    else
        return x;
}
int lca2(int x,int y)
{
    if(x==0 )return y;
    if(y==0 )return x;
    if(depth[x]<depth[y]) swap(x,y);
    int ss=depth[x]-depth[y];
    for(int j=0; j<17; j++)
        if(bit(ss,j))
            x=st[j][x];
    if(x==y) return x;
    for(int j=16; j>=0; --j)
        if(st[j][x]!=st[j][y])
            x=st[j][x],y=st[j][y];
    return st[0][x];
}
void build2(int node,int l,int r)
{
    if(l==r)
    {
        lz[node]=b[l];
        return;
    }
    int mid=l+r>>1;
    build2(node<<1,l,mid);
    build2(node<<1|1,mid+1,r);
    lz[node]=lca2(lz[node<<1],lz[node<<1|1]);
}
int get_lca(int node,int l,int r,int l1,int r1)
{
    if(l>r1||r<l1) return 0;
    if(l>=l1&&r<=r1) return lz[node];
    int mid=l+r>>1;
    return lca2(get_lca(node<<1,l,mid,l1,r1),get_lca(node<<1|1,mid+1,r,l1,r1));
}
void add(int x)
{
    s2=get1(1,1,n,1,euler[x].a);
    /// s3=get2(1,1,n,euler[x].a,n);
    upd(1,1,n,euler[x].a,euler[x].a,1);
    if(d[x]!=0||s10>1) return;
    s2=c[s2];
    s3=nxt[s2];
    pre[x]=s2;
    nxt[x]=s3;
    nxt[s2]=x;
    pre[s3]=x;
//if(l==3&&x==1) cout<<s2<<" "<<s3<<" "<<x,down
    s2=lca(x,s2,1);
    s3=lca(x,s3,1);
    if(depth[s2]<depth[s3]) swap(s2,s3);
    if(depth[x]>=depth[s2])
    {
        s4+=depth[x]-depth[s2]+1;
        d[x]=s2;
        e[s2]=x;
    }
}
void del(int x)
{
    upd(1,1,n,euler[x].a,euler[x].a,-1);
    s5=d[x];
    //s2=get1(1,1,n,euler[s5].a,euler[x].a);
    //s3=get2(1,1,n,euler[x].a,euler[s5].b);
    if(s10>=1) return;
    s2=pre[x];
    s3=nxt[x];
    nxt[s2]=s3;
    if(s3!=0) pre[s3]=s2;
    pre[x]=0;
    nxt[x]=0;
    s9=s2;
    if(d[x]==0)return;
    d[x]=0;
    e[s5]=0;
    s4-=(depth[x]-depth[s5]+1);
    s2=lca(s2,x,1);
    s3=lca(s3,x,1);
    if(max(depth[s2],depth[s3])<=depth[s5]) return;
    if(st[0][s2]==s9&&depth[s2]>=depth[s3]&&d[s2]==0)
    {
        s2=s9;
        s4+=depth[s2]-depth[s5]+1;
        d[s2]=s5;
        e[s5]=s2;
        return;
    }
    if(depth[s2]<depth[s3])swap(s2,s3);
    if(depth[s5]<depth[s2])
    {
        s3=e[s2];
        e[s2]=0;
        e[s5]=s3;
        d[s3]=s5;
        s4+=(depth[s2]-depth[s5]);
    }
}
void go(int x,int y)
{
    while(r<y)
    {
        r++;
        add(b[r]);

    }
    while(l>x)
    {
        l--;

        add(b[l]);
        //cout<<l<<" "<<s4,down

    }
    //cout<<s4<<" "<<x<<" "<<y,down
    while(l<x)
    {
        del(b[l]);
        l++;
    }
    while(r>y)
    {
        del(b[r]);

        r--;
    }

}
void phongbeo()
{
    cin>>n>>m>>k;
    S=sqrt(m);
    for(int i=1; i<n; i++)
        cin>>l>>r,v[l].pb(r),v[r].pb(l);
    dfs(1,0);
    for(int i=1; i<17; i++)
        for(int j=1; j<=n; j++)
            st[i][j]=st[i-1][st[i-1][j]];
    for(int i=1; i<=m; i++)
        cin>>b[i];
    for(int i=1; i<=k; i++)
        cin>>a[i].a>>a[i].b,a[i].c=i;
    sort(a+1,a+1+k,cmp);
    l=1;
    r=0;
    for(int i=1; i<=k; i++)
    {
        go(a[i].a,a[i].b);
       // s3=get_lca(1,1,m,a[i].a,a[i].b);
        s3=t[1].a;
        s5=nxt[0];
        s3=c[s3];
        s3=lca2(s3,s5);
        ans[a[i].c]=s4+depth[1]-depth[s3];
    }
    for(int i=1; i<=k; i++)
        cout<<ans[i],down
    }
/*
8 8 2
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 6 4 3 5 2 4 7
2 8
1 2

*/

Compilation message

tourism.cpp:46:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   46 | main()
      | ^~~~
tourism.cpp: In function 'void upd(int, int, int, int, int, int)':
tourism.cpp:87:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   87 |     int mid=l+r>>1;
      |             ~^~
tourism.cpp: In function 'int get1(int, int, int, int, int)':
tourism.cpp:99:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   99 |     int mid=l+r>>1;
      |             ~^~
tourism.cpp: In function 'void build2(int, int, int)':
tourism.cpp:153:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  153 |     int mid=l+r>>1;
      |             ~^~
tourism.cpp: In function 'int get_lca(int, int, int, int, int)':
tourism.cpp:162:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  162 |     int mid=l+r>>1;
      |             ~^~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16732 KB Output is correct
2 Correct 2 ms 16732 KB Output is correct
3 Correct 2 ms 16732 KB Output is correct
4 Correct 2 ms 16732 KB Output is correct
5 Correct 3 ms 16732 KB Output is correct
6 Correct 2 ms 16732 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 2 ms 16732 KB Output is correct
9 Correct 3 ms 16732 KB Output is correct
10 Correct 3 ms 16864 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 2 ms 16868 KB Output is correct
13 Correct 2 ms 16732 KB Output is correct
14 Correct 2 ms 16732 KB Output is correct
15 Correct 3 ms 16732 KB Output is correct
16 Correct 3 ms 16732 KB Output is correct
17 Correct 2 ms 16860 KB Output is correct
18 Correct 3 ms 16732 KB Output is correct
19 Correct 2 ms 16732 KB Output is correct
20 Correct 3 ms 16732 KB Output is correct
21 Correct 3 ms 16904 KB Output is correct
22 Correct 3 ms 16732 KB Output is correct
23 Correct 3 ms 16984 KB Output is correct
24 Correct 3 ms 16728 KB Output is correct
25 Correct 3 ms 16732 KB Output is correct
26 Correct 3 ms 16820 KB Output is correct
27 Correct 2 ms 16732 KB Output is correct
28 Correct 2 ms 16732 KB Output is correct
29 Correct 3 ms 16896 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16732 KB Output is correct
2 Correct 2 ms 16732 KB Output is correct
3 Correct 2 ms 16732 KB Output is correct
4 Correct 2 ms 16732 KB Output is correct
5 Correct 3 ms 16732 KB Output is correct
6 Correct 2 ms 16732 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 2 ms 16732 KB Output is correct
9 Correct 3 ms 16732 KB Output is correct
10 Correct 3 ms 16864 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 2 ms 16868 KB Output is correct
13 Correct 2 ms 16732 KB Output is correct
14 Correct 2 ms 16732 KB Output is correct
15 Correct 3 ms 16732 KB Output is correct
16 Correct 3 ms 16732 KB Output is correct
17 Correct 2 ms 16860 KB Output is correct
18 Correct 3 ms 16732 KB Output is correct
19 Correct 2 ms 16732 KB Output is correct
20 Correct 3 ms 16732 KB Output is correct
21 Correct 3 ms 16904 KB Output is correct
22 Correct 3 ms 16732 KB Output is correct
23 Correct 3 ms 16984 KB Output is correct
24 Correct 3 ms 16728 KB Output is correct
25 Correct 3 ms 16732 KB Output is correct
26 Correct 3 ms 16820 KB Output is correct
27 Correct 2 ms 16732 KB Output is correct
28 Correct 2 ms 16732 KB Output is correct
29 Correct 3 ms 16896 KB Output is correct
30 Correct 10 ms 16988 KB Output is correct
31 Correct 11 ms 17016 KB Output is correct
32 Correct 14 ms 17048 KB Output is correct
33 Correct 14 ms 16988 KB Output is correct
34 Correct 15 ms 16988 KB Output is correct
35 Correct 5 ms 16988 KB Output is correct
36 Correct 5 ms 16988 KB Output is correct
37 Correct 5 ms 16988 KB Output is correct
38 Correct 12 ms 16984 KB Output is correct
39 Correct 14 ms 17092 KB Output is correct
40 Correct 12 ms 16988 KB Output is correct
41 Correct 7 ms 16984 KB Output is correct
42 Correct 5 ms 17112 KB Output is correct
43 Correct 5 ms 17080 KB Output is correct
44 Correct 12 ms 16988 KB Output is correct
45 Correct 12 ms 16988 KB Output is correct
46 Correct 12 ms 17044 KB Output is correct
47 Correct 5 ms 16984 KB Output is correct
48 Correct 5 ms 16988 KB Output is correct
49 Correct 5 ms 16988 KB Output is correct
50 Correct 12 ms 16968 KB Output is correct
51 Correct 13 ms 17240 KB Output is correct
52 Correct 12 ms 16988 KB Output is correct
53 Correct 12 ms 16988 KB Output is correct
54 Correct 13 ms 16988 KB Output is correct
55 Correct 12 ms 16988 KB Output is correct
56 Correct 3 ms 16728 KB Output is correct
57 Correct 3 ms 16988 KB Output is correct
58 Correct 6 ms 16988 KB Output is correct

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16984 KB Output is correct
2 Correct 2 ms 16732 KB Output is correct
3 Correct 3 ms 16732 KB Output is correct
4 Correct 3468 ms 22084 KB Output is correct
5 Correct 2117 ms 24916 KB Output is correct
6 Correct 3170 ms 25604 KB Output is correct
7 Correct 4982 ms 26640 KB Output is correct
8 Execution timed out 5085 ms 26000 KB Time limit exceeded
9 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16732 KB Output is correct
2 Correct 88 ms 20048 KB Output is correct
3 Correct 134 ms 21080 KB Output is correct
4 Correct 130 ms 22448 KB Output is correct
5 Correct 99 ms 23948 KB Output is correct
6 Correct 86 ms 23892 KB Output is correct
7 Correct 118 ms 23976 KB Output is correct
8 Correct 140 ms 23748 KB Output is correct
9 Correct 131 ms 23984 KB Output is correct
10 Correct 156 ms 23988 KB Output is correct
11 Correct 212 ms 23984 KB Output is correct
12 Correct 194 ms 23892 KB Output is correct
13 Correct 207 ms 23896 KB Output is correct
14 Correct 245 ms 24244 KB Output is correct
15 Correct 213 ms 24624 KB Output is correct
16 Correct 173 ms 23984 KB Output is correct
17 Correct 185 ms 23980 KB Output is correct
18 Correct 184 ms 23984 KB Output is correct
19 Correct 89 ms 23764 KB Output is correct
20 Correct 93 ms 23932 KB Output is correct
21 Correct 100 ms 23920 KB Output is correct
22 Correct 99 ms 23736 KB Output is correct
23 Correct 130 ms 23932 KB Output is correct
24 Correct 123 ms 23928 KB Output is correct
25 Correct 125 ms 23920 KB Output is correct
26 Correct 141 ms 23888 KB Output is correct
27 Correct 199 ms 23816 KB Output is correct
28 Correct 214 ms 23672 KB Output is correct
29 Correct 253 ms 23872 KB Output is correct
30 Correct 261 ms 23904 KB Output is correct
31 Correct 297 ms 23876 KB Output is correct
32 Correct 320 ms 23924 KB Output is correct
33 Correct 308 ms 24184 KB Output is correct
34 Correct 287 ms 24724 KB Output is correct

Subtask #5
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 16896 KB Output is correct
2 Correct 3 ms 16744 KB Output is correct
3 Correct 3 ms 16744 KB Output is correct
4 Correct 4860 ms 20652 KB Output is correct
5 Correct 4887 ms 21916 KB Output is correct
6 Execution timed out 5039 ms 23544 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 16732 KB Output is correct
2 Correct 2 ms 16732 KB Output is correct
3 Correct 2 ms 16732 KB Output is correct
4 Correct 2 ms 16732 KB Output is correct
5 Correct 3 ms 16732 KB Output is correct
6 Correct 2 ms 16732 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 2 ms 16732 KB Output is correct
9 Correct 3 ms 16732 KB Output is correct
10 Correct 3 ms 16864 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 2 ms 16868 KB Output is correct
13 Correct 2 ms 16732 KB Output is correct
14 Correct 2 ms 16732 KB Output is correct
15 Correct 3 ms 16732 KB Output is correct
16 Correct 3 ms 16732 KB Output is correct
17 Correct 2 ms 16860 KB Output is correct
18 Correct 3 ms 16732 KB Output is correct
19 Correct 2 ms 16732 KB Output is correct
20 Correct 3 ms 16732 KB Output is correct
21 Correct 3 ms 16904 KB Output is correct
22 Correct 3 ms 16732 KB Output is correct
23 Correct 3 ms 16984 KB Output is correct
24 Correct 3 ms 16728 KB Output is correct
25 Correct 3 ms 16732 KB Output is correct
26 Correct 3 ms 16820 KB Output is correct
27 Correct 2 ms 16732 KB Output is correct
28 Correct 2 ms 16732 KB Output is correct
29 Correct 3 ms 16896 KB Output is correct
30 Correct 10 ms 16988 KB Output is correct
31 Correct 11 ms 17016 KB Output is correct
32 Correct 14 ms 17048 KB Output is correct
33 Correct 14 ms 16988 KB Output is correct
34 Correct 15 ms 16988 KB Output is correct
35 Correct 5 ms 16988 KB Output is correct
36 Correct 5 ms 16988 KB Output is correct
37 Correct 5 ms 16988 KB Output is correct
38 Correct 12 ms 16984 KB Output is correct
39 Correct 14 ms 17092 KB Output is correct
40 Correct 12 ms 16988 KB Output is correct
41 Correct 7 ms 16984 KB Output is correct
42 Correct 5 ms 17112 KB Output is correct
43 Correct 5 ms 17080 KB Output is correct
44 Correct 12 ms 16988 KB Output is correct
45 Correct 12 ms 16988 KB Output is correct
46 Correct 12 ms 17044 KB Output is correct
47 Correct 5 ms 16984 KB Output is correct
48 Correct 5 ms 16988 KB Output is correct
49 Correct 5 ms 16988 KB Output is correct
50 Correct 12 ms 16968 KB Output is correct
51 Correct 13 ms 17240 KB Output is correct
52 Correct 12 ms 16988 KB Output is correct
53 Correct 12 ms 16988 KB Output is correct
54 Correct 13 ms 16988 KB Output is correct
55 Correct 12 ms 16988 KB Output is correct
56 Correct 3 ms 16728 KB Output is correct
57 Correct 3 ms 16988 KB Output is correct
58 Correct 6 ms 16988 KB Output is correct
59 Correct 2 ms 16984 KB Output is correct
60 Correct 2 ms 16732 KB Output is correct
61 Correct 3 ms 16732 KB Output is correct
62 Correct 3468 ms 22084 KB Output is correct
63 Correct 2117 ms 24916 KB Output is correct
64 Correct 3170 ms 25604 KB Output is correct
65 Correct 4982 ms 26640 KB Output is correct
66 Execution timed out 5085 ms 26000 KB Time limit exceeded
67 Halted 0 ms 0 KB -